periodontal ligament

'periodontal ligament' can also refer to...

periodontal ligament

Prevotella intermedia upregulates MMP-1 and MMP-8 expression in human periodontal ligament cells

Prevotella intermedia induces matrix metalloproteinase-9 expression in human periodontal ligament cells

Ultrastructure of cementum and periodontal ligament after continuous intrusion in humans: a transmission electron microscopy study

Osteoblast-like properties of human periodontal ligament cells: an in vitro analysis

The biomechanical behaviour of the hyalinized periodontal ligament in dogs during experimental orthodontic tooth movement

Time-lapse observation of rat periodontal ligament during function and tooth movement, using microcomputed tomography

Biomechanical time dependency of the periodontal ligament: a combined experimental and numerical approach

Early responses of human periodontal ligament fibroblasts to cyclic and static mechanical stretching

Orthodontic strain affects the Hippo-pathway effector YAP concomitant with proliferation in human periodontal ligament fibroblasts

Expression of extracellular matrix molecules, MMPs and TIMPs in alveolar bone, cementum and periodontal ligaments during rat tooth eruption

Prevotella intermedia stimulates tissue-type plasminogen activator and plasminogen activator inhibitor-2 expression via multiple signaling pathways in human periodontal ligament cells

Biomechanical behaviour of the periodontal ligament of the beagle dog during the first 5 hours of orthodontic force application

Experimental and numerical determination of initial tooth mobility and material properties of the periodontal ligament in rat molar specimens

In vitro expression of matrix metalloproteinase-1, tissue inhibitor of metalloproteinase-1 and transforming growth factor-ß1 in human periodontal ligament fibroblasts

Endothelin‐1 expression in the microvasculature of normal and 3‐hour continuously loaded rat molar periodontal ligament

Restoration of mechanical strength and morphological features of the periodontal ligament following orthodontic retention in the rat mandibular first molar

Blood vessel response to pan-endothelium (RECA-1) antibody in normal and tooth loaded rat periodontal ligament

Stimulation of Prostaglandin E2 and Interleukin-1β Production From Old Rat Periodontal Ligament Cells Subjected to Mechanical Stress


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Quick Reference

A dense connective tissue layer about 0.2mm thick enveloping the roots of teeth, located between the cementum and alveolar bone and consisting mainly of collagen fibres (desmodontium) and ground substance (proteoglycans and glycoproteins). The cell types considered to be part of the periodontal ligament are the fibroblast, cementoblast, osteoblast, and osteoclast. It contains blood vessels, lymph vessels, and nerves. The periodontal ligament forms from collagen fibres within the dental follicle (Hertwig's sheath); cellular remnants of Hertwig's sheath remain between the collagen fibres into adult life. Its functions are to provide a support mechanism for the tooth, to maintain the vertical position of the tooth, to form, maintain, and repair the surrounding alveolar bone and cementum, to detect pressures on the tooth through proprioceptive sensors, and to provide nutrients to the cement-forming cells (cementoblasts). The fibres of the periodontal ligament are grouped together to provide tooth stability. With age, the width of the periodontal ligament decreases and there is a decrease in collagen and protein synthesis.

Further Reading:

Berkovitz B. K. B. Periodontal ligament: structural and clinical correlates. Dent Update 2004;31:46–54.

Periodontal ligament

Subjects: Dentistry.

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